Endometriosis Linked to Raised Breast & Ovarian Cancer Risks
A recent study has found that women with endometriosis or adenomyosis have an increased risk of developing breast and gynecological cancers. The research, conducted in Sweden, included over 49,000 women and highlighted particularly high risks in the same year as diagnosis. Clinicians are advised to maintain a higher level of suspicion for cancer in these patients.
- ▪Women diagnosed with endometriosis or adenomyosis had elevated risks for breast and gynecological cancers compared to those without these conditions.
- ▪The study included 49,133 women diagnosed between 1997 and 2018, with a mean follow-up duration of 20.2 years.
- ▪The standardized incidence ratio for cancers was 1.4 among women with endometriosis or adenomyosis, with particularly high rates for endometrial and ovarian cancers.
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| Original publisher | Medscape |
| Canonical URL | https://www.medscape.com/viewarticle/endometriosis-linked-raised-breast-ovarian-cancer-risks-2026a1000gmz?src=rss |
| Publication time | Tue, 26 May 2026 08:00:00 EDT |
| Retrieval time | 2026-05-26T12:07:48.662Z |
| Last seen | 2026-05-26T12:07:48.662Z |
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TOPLINE:Women diagnosed with endometriosis or adenomyosis had elevated risks for breast and gynaecological cancers compared with those without these conditions, with strong associations observed within the same calendar year as diagnosis.METHODOLOGY:Researchers in Sweden conducted a nationwide cohort study to evaluate the short-term and long-term associations between endometriosis or adenomyosis and the risk for specific gynaecological and breast cancers in women.They included 49,133 women (mean age, 42.7 years) diagnosed with endometriosis or adenomyosis between 1997 and 2018, with a total mean follow-up duration of 20.2 years.Data on diagnoses of endometriosis or adenomyosis were obtained from the National Patient Register, whereas data on diagnoses of gynaecological and breast cancers…
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